MARSHALL - Kellie Ellefson and Brandon Alberts announce their engagement. Parents of the couple are Ryan and Donna Ellefson of Marshall and Leonard and Sheri Alberts of Britton, S.D. Ellefson is a 2008 graduate of Marshall High School and a 2012 graduate of South Dakota State University with a degree in exercise science. She plans to pursue a doctorate of physical therapy degree at the University of Minnesota and graduate in June 2015. Alberts is a 2007 graduate of Langford High School and a 2011 graduate of SDSU with a degree in mechanical engineering. He is employed at Horton, Inc. as an engineer in Britton, S.D. A July 7, 2012, wedding is planned in Marshall.